Low-energy bulbs need about 80% less energy than traditional ones, reducing average annual electricity consumption for lighting from 700kWh to about 150kWh. This benefits the planet and your pocket alike:

If everyone in the UK installed one bulb, we'd save enough CO2 to fill the Albert Hall nearly 1,200 times
The low-energy light bulb and other efficient lighting systems could prevent a cumulative total of 16 billion tonnes of carbon from being added to the world's atmosphere over the next 25 years, according to the International Energy Agency
A house with 25 bulbs - about the average - could save £45 a year in electricity bills. Bear in mind that we spend £1.8bn on lighting UK homes each year - enough to pay for 47,000 new nurses and 45,000 new teachers
Low-energy bulbs are also recyclable, unlike traditional incandescents
Survey the market-place to find your ideal bulb, courtesy of the Energy Saving Trust
Check the wattage on the light you are replacing and purchase a CFL with the equivalent, lower wattage. As a rule of thumb, CFLs use about a fifth of the wattage to produce the same light. So to replace a traditional 60-Watt bulb, look for a CFL that's about 11 Watts
Check the lumen rating on the light you are replacing and purchase a compact fluorescent light bulb with the same lumen rating. (A lumen rating is the measure of light the bulb puts out)
Buy an 'energy saving recommended' bulb with a colour temperature of about 2,700K and a colour rendition index (CRI) of at least 80 (high CRI makes colours look natural and vibrant)
Planning on putting a CFL outside? Ensure that you purchase one rated for outdoor use, or wet applications
Dimmable CFLs are available from some outlets at a higher price.

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